A friend of mine installed a
Key2SafeDriving in his son's car.
http://safedrivingsystems.com/ Simple design, programmable on a home computer, plug into electrical maintenance diagnostic port. Also tamper proof... video>>>>
http://www.clickorlando.com/video/21101893/index.html
Basically it blocks voice and text messaging from his son's phone when the car is on and running.
-It will allow phone calls from your selected numbers you program into it, such as calls from Mom and Dad ("where are you?").
-It will allow emergency 911 calls.
Less than $100 bucks.
I think it is a good idea for the new driver. Not so sure about having it in my car. I try to
not text but find myself doing it every now and then, and I couldn't live without the voice. If you believe the statistics in the video, It's becoming a big problem and worthy of discussion.